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The Omega Seamaster 300 Bronze Gold is the 41 mm Heritage Seamaster 300 reference 234.92.41.21.10.001, introduced in 2021. It pairs a proprietary 9K Bronze Gold case with a dark brown aged sandwich dial, brown ceramic bezel, leather strap, and automatic Master Chronometer calibre 8912. Its appeal is a warmer, deliberately aged-looking take on the vintage-inspired Seamaster 300—not a bronze watch that is meant to develop the usual green verdigris patina.
What the 2021 Bronze Gold Seamaster 300 is
This is the Heritage Seamaster 300, not a Seamaster Diver 300M. Omega traces the Seamaster 300 line to 1957, when it launched as the brand’s first professional divers’ watch alongside the Speedmaster and Railmaster in the Professional Trilogy. The Bronze Gold edition applies that historical design language to a modern 41 mm watch with contemporary materials and a Master Chronometer movement. Omega’s product page and the Swatch Group’s March 2021 launch archive identify the model and its materials.
The reference is 234.92.41.21.10.001. Its visual theme is consistent across the case, dial, bezel, and strap: warm brown and muted gold tones, rather than the high-contrast look of a conventional stainless-steel diver.
What is Omega Bronze Gold?
Bronze Gold is Omega’s proprietary 9K alloy. Omega identifies it as containing 37.5% gold, along with palladium and silver, and describes its soft pink hue as sitting between the brand’s 18K Moonshine and Sedna gold alloys. Omega’s wording is that “The colour of Bronze Gold sits exactly between OMEGA’s 18K Moonshine™ gold and 18K Sedna™ gold.” The exact percentages of the other alloy components are not published in the cited product and launch materials. Fratello’s 2021 hands-on account also names copper and gallium among the reported constituents, but does not establish their proportions. Omega product specifications; Fratello’s review.
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#1 Best Overall
- Material: CUSN8 bronze case, bezel, stainless steel case back, synthetic sapphire crystal, suede leather band, stainless steel buckle
Omega says Bronze Gold resists corrosion and verdigris oxidation, ages slowly, and is designed for direct skin contact. Those are manufacturer claims; the cited launch material does not provide independent long-term wear testing. In practical terms, the watch is intended to retain its warm bronze-gold appearance rather than acquire the conspicuous green surface oxidation associated with some copper-rich bronze objects.
Case, dial, bezel, and strap
- Case: Bronze Gold, 41 mm in diameter. Fratello reports 14.4 mm thickness and a 48 mm lug-to-lug measurement.
- Dial: Dark brown CuSn8 bronze sandwich construction, with a specially aged patina, according to Omega. Fratello notes that the aging gives individual dials distinct appearances.
- Bezel: Brown ceramic ring with a unidirectional diving scale in vintage Super-LumiNova.
- Strap: Brown leather with a Bronze Gold buckle. Fratello reports a 21 mm lug width, tapering to 16 mm at the buckle.
The aged dial and ceramic bezel create the vintage color palette, while the ceramic insert is a distinct material from the Bronze Gold case. The dial’s patina is part of its finishing; it should not be confused with a promise that the case will develop verdigris.
Rank #2
- NH35A Movement: Powered by Japanese NH35A movement, 21,600 bph, stop-seconds function, bi-directional automatic winding, 24 jewels, 41-hour power reserve, ensuring accuracy and durability for daily use
- Vintage Design: Inspired by iconic dive watches from the 1970s, this This timepiece features a durable CUSN8 solid bronze case, black dial and ceramic bezel, with a combination of brushed and polished finishes for a timeless look
- Sapphire Crystal & BGW9 Super Lume: Scratch-resistant flat sapphire crystal with AR coating, BGW9 Super Lume on indices, hands, and bezel for clear readability in all conditions
- Watch Dimensions: Case diameter 43.8 mm, bezel diameter 41.5 mm, lug to lug length 46.8 mm, case thickness 13.5 mm, crown diameter 7 mm, weight 115 g. lugs 20 mm 200 M, fits wrists 7″ to 8.5″
- Waterproof: Rated for 200 m, suitable for handwashing, swimming, and diving, meeting all daily and underwater activity needs. The screw-down crown and unidirectional rotating ceramic bezel with 120 clicks ensure reliable underwater performance
How large does it wear?
The published measurements are 41 mm across, 14.4 mm thick, and 48 mm from lug to lug, as reported by Fratello. Diameter alone does not describe wrist fit: the lug-to-lug length and case thickness also affect how the watch sits and slides under a cuff. Broer reported that it wore comfortably on his 19 cm wrist, which is one reviewer’s experience rather than a fit guarantee for every wrist.
Movement and technical specifications
The watch uses Omega Co-Axial Master Chronometer calibre 8912, an automatic movement with a 60-hour power reserve. Omega lists resistance to magnetic fields reaching 15,000 gauss and says the watch and movement are METAS certified. Fratello reports a 3.5 Hz frequency (25,200 vibrations per hour) and no date function.
Rank #3
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- Multi-Function Waterproof Watch: This men's dive watch offers a range of features including a 1/100-second digital stopwatch, alarm clock, 12/24-hour time format, calendar, monthly display, weekday display, hourly chime, LED backlighting, as well as waterproof and shockproof capabilities.
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- After-sales service: We offer 24 months after-sales service for this men's digital watch. If you have any questions or complaints after receiving your watch, please contact us immediately via Amazon and we will definitely give you a satisfactory answer. We sincerely hope that this will be a satisfying and incredibly valuable shopping experience.
| Specification | Seamaster 300 Bronze Gold |
|---|---|
| Reference | 234.92.41.21.10.001 |
| Case diameter | 41 mm |
| Thickness | 14.4 mm (Fratello, 2021) |
| Lug to lug | 48 mm (Fratello, 2021) |
| Movement | Omega Co-Axial Master Chronometer calibre 8912, automatic |
| Power reserve | 60 hours (Omega) |
| Frequency | 3.5 Hz / 25,200 vibrations per hour (Fratello, 2021) |
| Magnetic resistance | Up to 15,000 gauss (Omega) |
| Dial / bezel | Aged brown CuSn8 bronze sandwich dial / brown ceramic bezel |
| Strap and lug width | Brown leather; 21 mm lug width, tapering to 16 mm at buckle (Fratello, 2021) |
These are stated specifications, not a claim that every example will perform identically in all conditions. For the certification and magnetic-resistance details, consult Omega’s model page.
Launch price and availability
Fratello reported a retail price of €11,500 and expected availability from June 2021. These are historical launch-era Euro-market details, not a current quote or confirmation of stock. The cited sources do not establish a current price or availability for this reference. Fratello, March 23, 2021.
Rank #4
- Ultra-Thin Metal Case: Crafted with an original ultra-slim and minimalist design, the luxury watches for men feature a premium metallic finish with no cheap plastic look. It boasts a 1.78-inch dial, a slim 0.34-inch case thickness, and weighs only 2.7 ounces. The soft, breathable rubber strap fits wrist sizes from 6.7 inches to 9.8 inches. Lightweight and comfortable, it won't burden your wrist, perfect for daily wear, work, travel, fitness and all outdoor activities.
- 5 ATM Waterproof: The waterproof watches for men support 5ATM water resistance, so you can wear it while washing hands, getting caught in rain or even swimming. Do not press any buttons underwater, and keep it away from hot water and steam. The sturdy metal case is sweat-proof, corrosion-resistant, scratch-resistant, drop-proof and fade-proof. Its hardened mineral glass lens is tough and shatter-resistant. The flexible rubber strap is skin-friendly, non-sticky, durable and odor-free.
- Easy-to-Read Practical Functions: Equipped with a 720° full-view display, it delivers high contrast and crystal-clear digits from every angle. Built-in LED backlight ensures easy time reading in bright sunlight or dim environments. The sports watches for men come with full practical features: time display, 1/100 second stopwatch, alarm clock, 12/24-hour format, calendar and week display. It fully meets your daily and office needs.
- Ideal Gift Choice: Packaged in an elegant minimalist gift box, this round-dial digital watch matches all outfits, ages and skin tones. With simple operation and reliable performance, it is a thoughtful gift for boyfriends, fathers, sons, colleagues, classmates and friends. It works perfectly for Valentine’s Day, birthdays, Father’s Day, Thanksgiving, Christmas and all other special occasions.
- Reliable After-Sales Service: We offer a 12-month warranty for this mens watch. Powered by a long-lasting Japanese high-capacity battery, it can run for 2 to 3 years. If you have any questions during use, please contact us via Amazon anytime. We will respond quickly and resolve your issues to your satisfaction. Enjoy your pleasant shopping experience!
Swatch Group’s March 2021 archive said the model came with a five-year warranty. That historical statement does not establish the terms that apply to a purchase today or in every market. Swatch Group, March 24, 2021.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who this Seamaster 300 suits
This reference makes the most sense for someone who wants the Heritage Seamaster 300’s vintage-inspired form with a distinctive precious-metal alloy and a coordinated brown dial and bezel. It is less suitable for a buyer seeking the cooler, conventional appearance of steel, a date display, or a case whose surface is expected to develop a pronounced green bronze patina. Because the leather strap is 21 mm at the lugs, replacement straps should be checked for that width and for compatibility with the buckle before purchase.
Quick Recap
Best Value
- Gold tone stainless steel case 40mm diameter x 14mm thick; Exhibition case back; Black dial; Luminous hands and hour markers
- NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight: 152 grams
- Gold tone stainless steel band, 205mm L x 20mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Mineral crystal; Screw-down crown; Unidirectional stainless steel coin edge bezel with black top bezel ring; 200 meter water resistant: Suitable for professional marine activity and surface water sports. Suitable for diving.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
